Triple
T18248357
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | CTA 2200-series railcars |
E437012
|
entity |
| Predicate | someUnitsPreservedBy |
P17062
|
FINISHED |
| Object | Chicago Transit Authority (heritage fleet) |
—
|
NE NERFINISHED |
How this triple was built (2 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Chicago Transit Authority (heritage fleet) | Statement: [CTA 2200-series railcars, someUnitsPreservedBy, Chicago Transit Authority (heritage fleet)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chicago Transit Authority (heritage fleet) Context triple: [CTA 2200-series railcars, someUnitsPreservedBy, Chicago Transit Authority (heritage fleet)]
-
A.
Chicago Transit Authority
chosen
The Chicago Transit Authority is the primary public transportation agency serving Chicago and several surrounding suburbs, operating the city’s extensive network of buses and rapid transit trains.
-
B.
Chicago Surface Lines
Chicago Surface Lines was a privately operated streetcar and bus system that provided most of Chicago’s surface public transportation in the first half of the 20th century.
-
C.
S-Line streetcar
The S-Line streetcar is a modern streetcar route in the Salt Lake City area that connects the Sugar House neighborhood with the regional light rail network as part of the public transit system.
-
D.
M-Line Streetcar
The M-Line Streetcar is a heritage streetcar service in Dallas, Texas, that operates vintage trolleys through the Uptown area and connects to downtown.
-
E.
GO Transit (Oshkosh)
GO Transit (Oshkosh) is the primary public bus system serving the city of Oshkosh, Wisconsin.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69d8b91104e08190a8241f7d260a5162 |
completed | April 10, 2026, 8:47 a.m. |
| NER | Named-entity recognition | batch_69e4f7e89b288190a286797ec2cd60a8 |
completed | April 19, 2026, 3:42 p.m. |
Created at: April 10, 2026, 10:33 a.m.